[Gmsh] Dividing a Mesh into Different Regions/Subdomains

[Ted Kord]

Hi

I've got a mesh of a ventricle in the shape of a hollow, irregular prolate
spheroid. So, there's an inner and outer radius. I'd like to divide the wall
(outer radius to inner radius) into three different layers. Given that the
shape is not a perfect sphere or even a perfect ellipsoid, is there a way to
do this with Gmsh?

Thanks

Ted
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